A if I am correct please correct me if I am wrong
just search how long is the Royal road from south to North
Answer:
The Monroe Doctrine is the best known U.S. policy toward the Western Hemisphere. Buried in a routine annual message delivered to Congress by President James Monroe in December 1823, the doctrine warns European nations that the United States would not tolerate further colonization or puppet monarchs.
The Auryans established a Imperial government in their empire. the King was the supreme head of the administration.